Here is a fun little script I put together that will turn your monitor into a strobe light via xbacklight. It also requires yad for the initial graphical configuration dialog. (It facilitates a little more complicated forms than zenity.)
On Ubuntu-based distros you should be able to simply run “sudo apt install xbacklight” and “sudo apt install yad” in the terminal. Here’s a download link for the script: Here.
You can then set its perms to make it executable and run it from the desktop.
Here’s the source:
#!/bin/bash declare -a settingsArray let nCount=0 settings=$(yad --title="Strobe Light" --form --align=right --field=" Lower Brightness" --field=" Upper Brightness" --field=" Flash Length" --field=" Interval Length" "0" "100" "0.05" "0.1" --button="Run:0" --separator=' ') ret=$? [[ $ret -ne 0 ]] && exit 0 for item in $settings; do settingsArray[nCount]="$item" let nCount++ done LowerBrightness=${settingsArray[0]} UpperBrightness=${settingsArray[1]} FlashLength=${settingsArray[2]} IntervalLength=${settingsArray[3]} function flashScreen { xbacklight -set $UpperBrightness -time 0 sleep $FlashLength xbacklight -set $LowerBrightness -time 0 } while [[ true ]]; do sleep $IntervalLength flashScreen done
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